<i18n dev> RFR: 8285838: DST not applying properly with zone id offset set with TZ env variable [v6]

[Gaurav Chaudhari]

> This fix ensures that when a lookup for a custom TZ code fails, and an attempt is made to find the GMT offset in order to get the current time, Daylight savings rules are applied correctly.

Gaurav Chaudhari has updated the pull request incrementally with two additional commits since the last revision:

 - 8285838: Cleanup of trailing whitespace
 - 8285838: Corrected month comparison check for TZ DST

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8661/files
  - new: https://git.openjdk.java.net/jdk/pull/8661/files/9e3b1bb4..87832663

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8661&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8661&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8661.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8661/head:pull/8661

PR: https://git.openjdk.java.net/jdk/pull/8661